Stairway riser



FIG. 1 is a left side elevational view, showing a first embodiment of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and

FIG. 7 is a perspective view thereof.

FIG. 8 is a left side elevational view, showing a second embodiment of my new design;

FIG. 9 is a top plan view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a front elevational view thereof;

FIG. 12 is a rear elevational view thereof;

FIG. 13 is a right side elevational view thereof; and

FIG. 14 is a perspective view thereof.

FIG. 15 is a left side elevational view, showing a third embodiment of my new design;

FIG. 16 is a top plan view thereof;

FIG. 17 is a bottom plan view thereof;

FIG. 18 is a front elevational view thereof;

FIG. 19 is a rear elevational view thereof;

FIG. 20 is a right side elevational view thereof; and,

FIG. 21 is a perspective view thereof. 

The ornamental design for a stairway riser, as shown and described. 